... all probability, Plato's own statement; made indeed to be read by friends in Syracuse in explanation of the role he had played ...

Of the many questions to which the RST has given rise, I should like to single out two groups.

A countably infinite relational structure M is called absolutely ubiquitous if the following holds: whenever N is a countably infinite structure, and M and N have the same isomorphism types of finite induced substructures, there is an isomorphism from M to N. Here a characterisation is given of absolutely ubiquitous structures over languages with finitely many relation symbols. A corresponding result is proved for uncountable structures.

I M M Gregory; The Right to Education, Journal of Philosophy of Education, Volume 7, Issue 1, 30 May 2006, Pages 85–102, https://doi.org/10.1111/j.1467-9752.197.

The psychological side of Ukrainian spiritual music is one of its most important and defining factors, because it forms the essence through which the most important function of this music - the function of its psychological influence on the person - is carried out.

THE object of this note is to draw attention to a suggestion made by the late Professor F. M. Cornford, in the course of a paper read to the Oxford Philological Society some years ago.